Effect of Ga${}^{+}$ irradiation on magnetic and magnetotransport properties in (Ga,Mn)As epilayers

H. Kato, K. Hamaya, Y. Kitamoto +2

We report on the magnetic and magnetotransport properties of ferromagnetic semiconductor (Ga,Mn)As modified by Ga${}^{+}$ ion irradiation using focused ion beam. A marked reduction i…